Or apple wallet for that matter. I'm pretty new to the concept of a digital wallet, and I'm guessing that if I eschew these google and apple offerings then I'm not really doing much beyond basically a folder called 'passes' but nonetheless a dedicated app that only opens pdfs and images and 'passes' rather than anything else still seems helpful.

Unfortunately so far I've now been offered the opportunity to add things to a wallet twice in 2 days and both times I'm provided only with a link to add to a google wallet or an apple wallet, I don't get .pkpass or .espass files. Those links, whether loaded on a desktop or an android smartphone don't directly link to a file in any way so there seems to be no obvious way to bypass being asked to sign in and use google's wallet. So far I've had to download a PDF, to add in to Pass Android but it only imported 1 of 2 pages so I had to then manually make 2 pdfs out of it at which point, if I'm keeping the pdf locally anyway, I'm not sure it was really easier even if the app is convenient access. I did manage to use Pass Android to make my own barcode to get around the fact that the membership card I was offered only had the google wallet links.

Is there a way to actually make use of these FOSS wallets? Because I'm not sure what they really do if it's so hard to actually get a hold of pass files.